<script type="text/javascript">
    // Search
    jQuery(document).ready(function($){
        jQuery("input#s").val("请输入关键字");
        textReplacement(jQuery('input#s').css("color", "#aaa"));
        function textReplacement(input){
            var originalvalue = input.val();
            input.focus( function(){
                if( jQuery.trim(input.val()) == originalvalue ){ input.val("").css("color", "#666"); }
            });
            input.blur( function(){
                if( jQuery.trim(input.val()) == "" ){ input.val(originalvalue).css("color", "#aaa"); }
            });
        }
    });
</script>


<form role="search" method="get" id="searchform" action="<?php echo esc_url( home_url( '/' ) ); ?>" >
    <div>
        <input type="text" value="" name="s" id="s" autofocus="" x-webkit-speech="" speech="" class="input_text" value="" autocomplete="off" />
        <input type="submit" id="searchsubmit" value="搜索" />
    </div>
</form>